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How compound interest can build long-term wealth
Compound interest is one of the most important ideas in personal finance because it shows how money can grow on top of previous growth. When interest compounds, your balance earns returns, and then those returns can earn additional returns in future periods. This is why time can be such a powerful advantage for savers and investors.
This calculator estimates a future balance using your starting amount, monthly contribution, annual interest rate, investment duration, and compounding frequency. It separates your projected final balance into total contributions and interest earned, making it easier to see how much growth may come from consistent investing versus potential returns.
Use the results as an educational planning estimate, not a guarantee. Actual investment returns can rise or fall, and savings account rates may change. Taxes, fees, inflation, and market volatility are not included. For best results, compare several scenarios with different contribution amounts and rates before making financial decisions.